Hinge



- Feb. 25, 1930. G. scHAMBERG 1,748,733'

HINGE Filed April 3. 192e GEORGE scHAMBEne, or BUFFALO, NEW YoEx,'Ass1GNoE 'ro BUEEALQ co-orEEATIvE s'rovE cop-0E BUFFALO, NEW YORK, A coRroRArroN or NEW YORK HINGE Application mea Aprile, 192s. serieu No. 266,959.

y This invention relates to a hinge and more particularly to a concealed hinge which is intended for use in connection with oven doors for enameled stoves, although the same mayvalso be used in` other places.

TheY principal object of this invention isto providesuch a hinge which so supports and limits the door in its opening movement that p the lower enameled edge thereof cannot come in contact withl the stove frame which supports it. It hasv been found thatV with enameled stoves, when an enameled surface of a movingpart, such as the lower edge of the oven door, comes in contact with another surface, the enamel breaks,vcracks and chips, the original chipped portion atthe point of contact gradually spreading until a large and unsightly patch of ,unenameled surface appearson the face of the door. To avoid this, the presenthinge is designed to prevent contact between the vexposed enamelededge of thedoor and the stove frame. f

Another object is to provide a hinge which is so organized that when thedoor is opened its inner facey forms continuation ofthe ioor of the oven thereby permitting of sliding the heavypots and roasters into and out ofv theV oven `withouthaving to ride over a shoulder formedbythe oven door being higheror lower than the'oven floor.

A further aim is to provide such a hinge 'f -inqwhichl all thehinge parts areformed in- ;tegrally n with either the door. or? the frame,

fr thereby eliminating the expense ofseparate castings and facilitating'th'eassembly of the stove as well as eliminating the cost of'bolts orother fastenings.

. Other purposes areto provide such a hinge` which is noiseless, smooth in action, strong Vand durable and'not liable to get out of order,

in which spring means are provided for cushioning the opening` movement of the v In-the accompanying drawings: i

`Figure 1 is a front view of a stove having l.an loven door in connection with whichtthe Ypresent invention is intended to be employed.

i Figure 2 isa verticalsection through the jdojor, and-frame, the same beingftaken on line 5.o` f Y vide a deiiniterfinish line for the enamel at Y Figure 3 is a vertical section through the oven door, hinge and stove frame, the same being taken on line 3-3, Fig. 4;, and showing the oven door fully opened.

Figure et is a fragmentary rear View of the door, frame and hinge viewed from the inoven is hinged to swing downwardly and outwardly. Each ofthesebars is preferably made of cast iron and the oven is enclosed by panels 14; in any well known and approved manner.-

The oven door 13 as shown is made integrally from cast'iron and is formed to pro-l vide a raisedmarginal portion 15 and a cen--` tral panel 16. The door is provided with the .usual handle 17 and may have a temperature indicator 18 to indicate 'oven heat. The en tire outer surface of the stove frame andthe oven door are coated with enamel and to prothe lower edge ofthe oven door, .the lower edge of the same is provided with achannel 1,9 which extends between the hinges which .are locatedat the lower corners of the oven door. In applying theenamel, the lower edge of thewoven door is enameled up to the chan-vr nel 19 so that the enamel does not extend .around on the rear side of the door where it would be chipped off whenthe door is closed. Stove enamel is extremely brittle and the noriginal chipped portion would soon spread Ato the front face of thedoor and render the same unsightly. Y g y Projecting vupwardly fromeach end of the lower cross bar 12 of the stove frame isy an integrall bearing *membery 2() which bearing memberspivotally support they oven door.V

`As best shown in Figs. 2, 3 and 5, each lofthese bearing members 2O lis., formed to provide va forwardly facingA half; bearing V21 kand the ico rear side of this bearing member' is formed to provide a semicylindrical face 22 which eX- tends from the stove frame to the upper'end of the bearing and is substantially concentric with the half bearing face 21 on the front side of the bearing member.

To pivotally support the door on the half bearing 21, the oven door is formed at its lower corners to provide rounded projections 23 which extend downwardly and inwardly therefrom and engage the half bearing 21 on the stove frame. As best shown in Fig. 3, these projections are not circular but each is provided with a downwardly Aand rearwardly projecting salient portion 24 which engages the half bearing'. By the provision of this salient portion, the front face of each of the rounded projections 23 at no time comes in contact with the half bearing, and should this part of the projection be enameled, the same will not become chipped with consequent spreading of the chipping to the face of the oven door.

To guide the oven door in its pivotal movement and also to hold the projection 23v in engagement with the half bearing 21, arms 25 are formed integrally with the oven door and project downwardly1 and inwardly therefrom. Each of these arms 25 is curved and is formed to provide a semicylindrical face 26 which engages the semicylindrical face on the rear or inner side of the bearing member 20. By this means in all positions of the door, the projection 23 is held in proper engagement with the front half bearing 21, and

Vthe door cannot be lifted or moved out of place.

To prevent movement of the oven door beyond a horizontal position and also to prevent the front faceV of the door from coming y in contact with the lowercross bar 12 with consequent marring of the enamel each time the door is lowered, a stop 27 is formed on the lower or outer end of the guiding arm 25, this stop'engaging the side flanges 28A projecting inwardly from the side bars 10 of the stove frame when the door is lowered to its horizontal position shown in Fig'. 3. These flanges 2S also serve to limit the inward movement ofthe door when it isclose'd. A v- ToA cushion the downward movement o the oven door and avoid the dangerof breakage of any of the cast metal parts should'the door be accidentally dropped when .opening the same, a helical spring 29'is secured at its upper end to each of the stop projections 27, andV at its lower end is suitably secured to the stove frame. it isapparent that as'the door lowers andthe stop project-ion 27' is elevated, the helical spring 29 is stretched to yieldingly prevent the door from dropping. Should the half bearing 21 or the projection 23 become worn through constant use, a split sleeve or shim 50 may be slipped over each of the projections 23,a's best'shown inV Fig. 5.

By this means the wear at the pivotal connection between the oven door and the stove is compensated, and the hinge will continue to function noiselessly and smoothly. Such replacement would be, of course, exceptional.

It will be noted that the hinge is so designed that at no time does the enameled surface of the oven door and frame come in contact with a moving part and the same will therefore be preserved in good condition.

rihis hinge is also strong, durable and all parts of it areV cast integrally with the oven door or stove frame, thereby materially reducing manufacturing costs. 1t is also smooth and noiseless in action and will not get out of order under severe use.

l claim as my invention:

l. A hinge for a door supported on a frame including a bearing member on said frame, said bearing member being formed to provide a half bearing on-its outer side and having a cylindrical concentric surface on its rear side, a rounded projection on said door engaging said half bearing, a guiding arm projecting rearwardly from said door and having a semicylindrical surface engaging the semicylindrical rear face of said bearing member, and means forrlimiting the movement of said door. Y

2. A hinge for a door supported on a frame including a bearing member projecting upwardly from the lowerv edge of said frame, said bearing member' being formed -to provide a forwardly facing half bearing and having a concentricfsemicylindrical surface on its rear side, a rounded projection projecting downwardly and inwardly from the lower edge of said door and engaging said half bearing, a guiding arm projecting rearwardly and downwardly from said door and having a semieylindrical surface engaging the rear face of said bearing member thereby to guide said door in its pivotal movement, meansfor limiting the pivotalmovement of said door and spring means exerting a downward and rearward pressure against said door whereby said projection is held against said forwardly facing half bearing in all po- Y sitions of said door.

3., A hinge for a door supported on a frame including a bearing member projecting upwardly from the lower edge of saidframe, said bearing member being formed'to provide a forwardly' facing half bearing and having a concentric semicylindrical surface on its rear side, a projection projecting downwardly and rearwardly from the lower edge of said door, said projection having a salient portion on its rear side which salient portion engages said half bearing thereby to prevent contact between the exposed surfaces of said door and said frame, a Vguiding arm projecting downwardlyV and rearwardly from saiddoor and having a semicylindrical surface engaging the rear faeeof'said bearing member therehyto guidesaid door in .its pivotal movement, and means for limitv ing the pivotal movement of said door.

4. A hinge for a door supported in a frame including a bearing member formed integrally with said frame and projecting upwardly therefrom, said bearing member being formed yto provide a forwardly facing half bearing and having a concentric semicylindrical surface on its rear side, a projecv j tion formed integrally with said door and projecting downwardly and rearwardly from kthe lower edge thereof to engage said half bearing, a curved guiding arm formed integrally with said door and projecting downwardly and rearwardly therefrom and having a semicylindrieal surface engagin the rear face of said bearing member there y to signature.

guide said door in its pivotal movement, and a spring connected with the end of said guiding 'arm and exerting a downward and rearwardvpressure thereon in all positions of said guiding arm whereby said projection is held against said forwardly facing half bearing in all positions of -said door.

In testimony whereof I hereby ax my GEORGE scHAMBERe. 

